Fan-blower



(No Model.)

W. T. GHRISTY.

FAN BLOWER. v

Patented Mar. 13, 1894.

1N! nAfloNAL urunanawuma coMPAMY,

wAamm'rcu. D. c.

UNITED STATES PATENT OFF CE.

WILLIAM T. CHRISTY, or NEWARK, ASSIGNOR OF ONE-HALF TO ADAM I 'SOHEID,OFHARRISON, NEW JERSEY.

FAN-BLOWER.

SPECIFICATION forming part of Letters Patent No. 516,366, dated March13, 1894.

' r Application filed November 26, 1892. SerialNo. 453,208. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM T. OHRISTY, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Fan-Blowers; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specification. i

The objects of thisinvention are to secure in creased efficiency in thetransmission of air and the ventilation of apartments, to prevent backdrafts and the consequent loss of power, to centralize the current ofair so as to secure greater force and'a more distant effect of thedevice in operation, to reduce the cost of construction, facilitate theassembling of parts and to secure other advantages and resultssome ofwhich will be more fully set forth in connection with the description ofthe working parts. 7

The invention consists, in the improved pneumatic wheel and in thearrangements and combinations of parts, all substantially as will behereinafter described and finally embodied'in the clauses of the claim.

Referring to the accompanying drawings, in which like letters indicatecorresponding parts in each of the several Views, Figure 1 is a frontelevation of the improved device devoid of the tube through which theair may be transmitted, and Fig. 2 is a central vertical section of thesame; Fig.3 is a detail plan of a portion of the supporting frame. Fig.4 is an elevation and section of a blade or wing of the windwheel, andFig. 5 a side and front view of a certain adjustable arm for carryingone of said wings.

In said drawings, a indicates a frame made in sections of which ctindicates the annular tube section or rim, a. a rear section which mayhave a leg, a when the wheel is secured to a bed plate, 1), at rightangles thereto and which has an arm, a", extending forward to supportthe annular section a and arms, a, and 0., provided with dowels, a

upper sections, (1. of the separable bearings may be provided withordinary oil cups f.

From the center of the shaft-carrying section,

a arms, a, project as shown in detail, Fig. 3, extending oppositely toengage the annular rim or section and hold the same in proper relativeposition. These arms are forked or branched as at a a and conmeet thetwo bearings on oppositesides of the pulley, spaces g, g, being providedto admit free manipulation of the belt and pulley. At one of theextremities of the shaft, e, is secured the pneumatic wheel, h,consisting of the hub h integral arms h and wings or blades m in which afeature of the invention inheres. The said arms, h, extend radially fromthe shaft and are provided with bearings for the wings, m, whichbearings are planes at angles to a plane cutting the shaft at rightangles, so as to give the said wings fastened on said bearings theproper inclinations. The said wings are each of oneintegral piece ofmetal from the peripheries or where they close by approach the annularsection a, to their pointed and outwardly turned inner ends where theymeet one another, as shown in Fig. 1, and are properly curved to propelthe air in one direction or the other when the wheel is turned. Byv thisconstruction 'there is no opportunity for a central back draft or amovement of air toward the wheel due to the fact of there being at thecenter no propulsive surface of the wheel as in cases where the wings orblades terminate short of the center of motion, but

the blades from the very center of movement to the periphery of thewheel serve in propelling the air. By this arrangement of the wings, asolid current of air is forced forward, and because of there being noback drafts referred to, counteracting the impetus of the current andlimiting its efiects, greater quantities of air are transmitted. Again,by the construction disclosed, the hub, by being arranged back from thefan, does not interfere with the movement of air but the whole surfaceof the wheel from the center out is efficient in propelling. I prefer tomake the wings adjustable on the integral arms h or hub, h, and tosecure such adjustability, the said wings or blades, m, are secured onsupplemental sections, h, of the arms h, the latter being socketed andthe supplemental sections being provided with bolts, h, which extendthrough the integral arms and are secured by nuts or the like in rigidrelation to the co-operating parts.

Having thus described the invention, what I claim as new, and desire tocover and secure in these Letters Patent, is-- 1. In combination with asuitable frame or support and shaft for giving rotary motion, a wingedwheel the wings of which meet at the center of movement forward of theend of said shaft, substantially as set forth.

2. In combination with the frame a and shaft 6 and means for rotatingthe latter, a hub, h, secured at the extremity of the shaft and havingarms with inclined hearings on which wings or blades m are secured saidwing extending inward toward the center of movement and meeting at apoint forward of said extremity, substantially as set forth.

3. In combination with a frame consisting of an annular section a asection a having arms a a?" a", a, a shaft-carrying section secured onsaid arms a a and having arms a also extending to the annular section toco-operate with the arm, a, in supporting the same, a shaft e and wheelcarried by said shaft and working in said annular section, substantiallyas set forth.

4. In combination with the annular frame section in which the wheelrotates, a section,

point in line with the shaft and forward of the same.

5. In combination with a frame and shaft and means for rotating thesame, a hub arranged on said shaft and having arms arranged radially andbent forward beyond the end of said shaft and thereat provided withbearings for the wings, and said wings provided with integral extensionstoward the center which are pointed and bent outward or away from theend of the shaft, the points approaching close to one another in thecenter line of the shaft, substantially as set forth.

6. In combination with the shaft and wings, a hub having forwardlycnrvedarms andsupplementary, adjustable sections of arms carrying said wingssubstantially as set forth.

I 7. In combination with the shaft and means for rotating the same, ahub arranged on the end of the shaft and having arms extending forwardof said end and provided with snpplemental sections and wings arrangedon said supplemental sections and extending inward or toward the centerand meeting or closely approximating one another forward of the end ofthe shaft substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this16th day of November, 1892.

WILLIAM T. OHRISTY.

Witnesses:

OLIVER DRAKE, ADAM SCHEID.

